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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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USB4624 데이터시트(PDF) 31 Page - Microchip Technology |
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USB4624 데이터시트(HTML) 31 Page - Microchip Technology |
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31 / 58 page  USB 2.0 HSIC Hi-Speed 4-Port Hub Controller Datasheet 2014 Microchip Technology Inc. DS00001717A-page 31 6.3.1 Port Disable (PRT_DIS_Mx/PRT_DIS_Px) These configuration straps disable the associated USB ports D- and D+ signals, respectively, where “x” is the USB port number. Both the negative “M” and positive “P” port disable configuration straps for a given USB port must be tied high at reset to disable the associated port. 6.3.2 SPI Speed Select (SPI_SPD_SEL) This strap is used to select the speed of the SPI as follows: Note: If the latched value on reset is 1, this pin is tri-stated when the chip is in the suspend state. If the latched value on reset is 0, this pin is driven low during a suspend state. Table 6.1 PRT_DIS_Mx/PRT_DIS_Px Configuration Definitions PRT_DIS_MX/PRT_DIS_PX DEFINITION ‘0’ Port x D-/D+ Signal is Enabled (Default) ‘1’ Port x D-/D+ Signal is Disabled Table 6.2 SPI_SPD_SEL Configuration Definitions SPI_SPD_SEL DEFINITION ‘0’ 30 MHz SPI Operation (Default) ‘1’ 60 MHz SPI Operation |
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